横向
1
Large natural elevation of earth
4
Dry land with little rainfall
8
Largest ocean on Earth
9
Goods brought in from another country
纵向
2
Large area covered with trees
3
Deep narrow valley with steep sides
5
Land surrounded by water
6
Distance east or west of prime meridian
7
Wearing away of land by water or wind
10
Vast body of salt water
11
Largest river in South America
12
City that is seat of government